Steinbeis Allegra 7.5.0 Build 29 extarctZippedFile path traversal

Summaryinfo

A vulnerability was found in Steinbeis Allegra 7.5.0 Build 29 and classified as critical. This vulnerability affects the function extarctZippedFile. Such manipulation leads to path traversal. This vulnerability is documented as CVE-2023-51640. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Steinbeis Allegra 7.5.0 Build 29 and classified as critical. Affected by this issue is the function extarctZippedFile. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Allegra extarctZippedFile Directory Traversal Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Allegra. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the extarctZippedFile [sic] method. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of LOCAL SERVICE. Was ZDI-CAN-22504.

The advisory is available at zerodayinitiative.com. This vulnerability is handled as CVE-2023-51640 since 12/20/2023. The exploitation is known to be easy. The attack may be launched remotely. The exploitation needs additional levels of successful authentication. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

Upgrading to version 7.5.1 eliminates this vulnerability. The upgrade is hosted for download at trackplus.com.

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Productinfo

Vendor

• Steinbeis

Name

• Allegra

Version

• 7.5.0 Build 29

CPE 2.3info

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CPE 2.2info

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